[kdenlive] Black video when rendering with v0.9.10

[Narcis Garcia]

I checked a project that produced the black issue, and created a new
project to reproduce step-by-step all design.
New project renders perfectly.

I attach both .kdenlive files.
I see the "bad" one uses cache and the "good" not.


El 22/03/16 a les 14:19, Narcis Garcia ha escrit:
> /usr/bin/melt was already correctly set.
> Tried the script way and it renders same way as from GUI: no error
> messages, black video track.
> 
> I've checked that this problem occurs with any coded profile I've tried
> (H.264/AAC high, DV PAL 4:3, WebM, AVI XVid4).
> I've observed that "generate script" action saves an .mlt file, and this
> XML file contains a <playlist id="black_track"> clause.
> Is this only related to fade_to_black?
> 
> 
> El 22/03/16 a les 13:27, jb ha escrit:
>> Le 22.03.16 11:06, Narcis Garcia a écrit :
>>> If melt renders perfectly a .kdenlive project from command line, but not
>>> from Kdenlive GUI, how can I find the problem?
>>>
>>> If render is called from GUI (Kdenlive 0.9.10 in Ubuntu 14.04) video
>>> track results in black.
>>>
>> Hi, there are 2 steps you can try:
>>
>> 1 - go to Kdenlive Settings, under Environnement, and check that the
>> path to the melt binary is correctly set.
>>
>> If that is not the problem, try step 2:
>>
>> 2 - in the Rendering dialog, instead of the "Render" button, click on
>> "Script rendering" button. This will create an executable script file in
>> $HOME/kdenlive/script/ like:
>>
>> script001.sh
>>
>> In a terminal, go the the script folder and try to run it:
>>
>> ./script001.sh
>>
>> This script should launch the same command that Kdenlive uses for
>> rendering. That might give you more infos. If the script fails and you
>> don't understand, you can copy/paste its content here.
>>
>> Regards
>> jb
>>
>>
>>
>>>
>>> El 08/03/16 a les 21:32, Narcis Garcia ha escrit:
>>>> Tried melt to render same project, and result has visible video track.
>>>> It seems to not being a melt problem: only Kdenlive.
>>>> How can I find the problem with Kdenlive?
>>>>
>>>>
>>>> On 06/03/16 14:28, Jean-Baptiste Mardelle wrote:
>>>>> On Sunday, March 6, 2016 10:44:38 AM CET, Narcis Garcia wrote:
>>>>>> I've tested this command and produces right a video file:
>>>>>> $ melt clip.ogv -consumer avformat:result.mp4 vcodec=libx264
>>>>>>
>>>>>> What (and how) can I test about a sample Kdenlive project?
>>>>> Kdenlive project files can be used like clips in melt command line.
>>>>> Try:
>>>>>
>>>>> melt myproject.kdenlive -consumer avformat:result.mp4 vcodec=libx264
>>>>>
>>>>> regards
>>>>> jb
>>>>>
>>>>>
>>>>>
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>>
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